Analysis of surface subsidence and ground fissure development law of No.15025 Face in Xinjing Mine
Qin Jinjun
为了分析新景矿地裂缝的发育规律,防止地表洪水从地裂缝灌入井下,以新景矿15025工作面为研究对象,在该工作面进行地表沉降及地裂缝发育规律研究,建立相关观测站和观测线。通过在15025工作面实施地表沉降监测得出地表最大沉降量为4 255 mm,沉降中心偏向于煤层的下山方向;通过在15025工作面实施地裂缝发育深度探测,得出地裂缝的发育深度与宽度近似呈线性关系,比例系数为13.081,裂缝发育深度与落差近似呈对数函数关系,比例系数为1.451 3。研究结果为矿井预测地裂缝发育深度、防治地面洪水从地裂缝进入矿井提供依据。
In order to analyze the development law of ground fissures in Xinjing Mine and prevent surface flood from pouring into the underground through ground fissures, No.15025 Face of Xinjing Mine was taken as the research object, and the surface subsidence and ground fissures development law were studied in this working face. And the relevant observation stations and observation lines were established. Through the implementation of surface subsidence monitoring in No.15025 Face, it was concluded that the maximum surface subsidence was 4 255 mm, and the subsidence center was biased towards the downhill direction of the coal seam. Through the detection of the development depth of ground fissures in No.15025 Face, it was concluded that the development depth of ground fissures was approximately linear with the width, and the ratio coefficient was 13.081. The development depth of ground fissures was approximately logarithmic with the drop, and the ratio coefficient was 1.451 3. The research results provided a basis for the mine to predict the development depth of ground fissures and prevent ground floods from entering the mine through ground fissures.
coal seam mining;ground fissures;surface subsidence;water disaster prevention and control
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会